Rats in the Walls

The Rats in the Walls is perhaps Lovecraft's most powerful tales. The story follows Delapore as he discovers his heritage and begins a slow, terrifying descent into madness. When he reclaims his familial home which is in ruins and decides to restore it, he has no idea of the horrors he will unleash; secretes better left undisturbed.
One of the finest stories of Lovecraft's entire career. -Lin Carter